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rt2x00: merge a fix for random tx stalls

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30871 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2012-03-10 13:31:34 +00:00
parent 92e1c8bfd3
commit acd288a145
3 changed files with 58 additions and 3 deletions
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55
package/mac80211/patches/300-pending_work.patch
View File

@ -1891,3 +1891,58 @@
if (on) if (on)
REG_SET_BIT(ah, AR_PHY_SFCORR_LOW, REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -430,10 +430,14 @@ void rt2x00lib_txdone(struct queue_entry
/*
* If the data queue was below the threshold before the txdone
* handler we must make sure the packet queue in the mac80211 stack
- * is reenabled when the txdone handler has finished.
+ * is reenabled when the txdone handler has finished. This has to be
+ * serialized with rt2x00mac_tx(), otherwise we can wake up queue
+ * before it was stopped.
*/
+ spin_lock_bh(&entry->queue->tx_lock);
if (!rt2x00queue_threshold(entry->queue))
rt2x00queue_unpause_queue(entry->queue);
+ spin_unlock_bh(&entry->queue->tx_lock);
}
EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -152,13 +152,22 @@ void rt2x00mac_tx(struct ieee80211_hw *h
if (unlikely(rt2x00queue_write_tx_frame(queue, skb, false)))
goto exit_fail;
+ /*
+ * Pausing queue has to be serialized with rt2x00lib_txdone(). Note
+ * we should not use spin_lock_bh variant as bottom halve was already
+ * disabled before ieee80211_xmit() call.
+ */
+ spin_lock(&queue->tx_lock);
if (rt2x00queue_threshold(queue))
rt2x00queue_pause_queue(queue);
+ spin_unlock(&queue->tx_lock);
return;
exit_fail:
+ spin_lock(&queue->tx_lock);
rt2x00queue_pause_queue(queue);
+ spin_unlock(&queue->tx_lock);
exit_free_skb:
ieee80211_free_txskb(hw, skb);
}
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -619,6 +619,9 @@ int rt2x00queue_write_tx_frame(struct da
else if (test_bit(REQUIRE_DMA, &queue->rt2x00dev->cap_flags))
rt2x00queue_align_frame(skb);
+ /*
+ * That function must be called with bh disabled.
+ */
spin_lock(&queue->tx_lock);
if (unlikely(rt2x00queue_full(queue))) {

4
package/mac80211/patches/603-rt2x00-introduce-rt2x00eeprom.patch
View File

@ -239,7 +239,7 @@
.get_entry_state = rt2800pci_get_entry_state, .get_entry_state = rt2800pci_get_entry_state,
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c --- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -1161,6 +1161,10 @@ int rt2x00lib_probe_dev(struct rt2x00_de @@ -1165,6 +1165,10 @@ int rt2x00lib_probe_dev(struct rt2x00_de
BIT(NL80211_IFTYPE_MESH_POINT) | BIT(NL80211_IFTYPE_MESH_POINT) |
BIT(NL80211_IFTYPE_WDS); BIT(NL80211_IFTYPE_WDS);
@ -250,7 +250,7 @@
/* /*
* Initialize work. * Initialize work.
*/ */
@@ -1284,6 +1288,11 @@ void rt2x00lib_remove_dev(struct rt2x00_ @@ -1288,6 +1292,11 @@ void rt2x00lib_remove_dev(struct rt2x00_
*/ */
if (rt2x00dev->drv_data) if (rt2x00dev->drv_data)
kfree(rt2x00dev->drv_data); kfree(rt2x00dev->drv_data);

2
package/mac80211/patches/607-rt2x00-allow_disabling_bands_through_platform_data.patch
View File

@ -12,7 +12,7 @@
#endif /* _RT2X00_PLATFORM_H */ #endif /* _RT2X00_PLATFORM_H */
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c --- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -829,6 +829,22 @@ static int rt2x00lib_probe_hw_modes(stru @@ -833,6 +833,22 @@ static int rt2x00lib_probe_hw_modes(stru
unsigned int num_rates; unsigned int num_rates;
unsigned int i; unsigned int i;